This year, io9 explored the outer limits of sexuality, from the most delightful pin-up art to the weirdest sex museums. We delved into indecent 1970s cosplay and incredibly strange films. We explored the history of porn featuring superheroes and space adventurers.

Are we in the golden age of superhero porn? It sure seems like that. The Avengers continues to…
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Are we in the golden age of superhero porn? It sure seems like that. The Avengers continues to break box office records, and meanwhile a ton of superhero porn spoofs come out every month. There will probably be a dozen Justice League porn films before a real Justice League movie ever comes out. But superhero porn has a long, if not necessarily proud, tradition. More »

If your biggest problem with Disney's John Carter movie is that it didn't contain nearly…
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If your biggest problem with Disney's John Carter movie is that it didn't contain nearly enough Martian wang, then James Killian Spratt's graphic (in more ways than one) adaptation of A Princess of Mars might be up your alley. Spratt is creating his own comic version of Burroughs' classic pulp, where the action is set off by giant alien knockers. More »

Concept art takes us to strange worlds and expands our imagination — but sometimes, it's also…
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Concept art takes us to strange worlds and expands our imagination - but sometimes, it's also as sexy as hell. You can't look through the artist galleries at CGHub, Concept Art World and other sites without finding some concept art that's basically pin-up art as well. More »

Science fiction and fantasy cosplay has changed a lot in the last 35 years. Back in the late 1970s, …
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Science fiction and fantasy cosplay has changed a lot in the last 35 years. Back in the late 1970s, there weren't very many rules, if any. And there certainly was nothing like a separate costuming fandom. There were also an awful lot of naked people (which eventually resulted in the only rule I ever remember seeing posted: "No costume is no costume"), making authentic Edgar Rice Burroughs characters fairly popular subjects. More »

Science fiction has long encompassed every aspect of human experience — including sex. For as long…
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Science fiction has long encompassed every aspect of human experience - including sex. For as long as we've dreamed of going to space, we've dreamed of getting it on there. And porn has embraced science fiction as well - from 1968's softcore masterpiece Barbarella to the 1990s cyberpunk boom to the recent craze for porn spoofs, there has always been science fiction porn. More »

We're all scared of killer robots, but deep down we hope that one day our robot creations will …
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We're all scared of killer robots, but deep down we hope that one day our robot creations will be our friends. And lovers. There's something disturbing about the notion of a robot sex slave, but we like to imagine that one day robots will love us of their own free will. And that some of us will be cyborgs. That's why the best robot and cyborg erotic art has a playful, friendly quality to it. More »

Witness the genius of Screaming Mad George, one of the true special effects visionaries working…
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Witness the genius of Screaming Mad George, one of the true special effects visionaries working today. He uses absolutely no CGI to create gloopy, strange, mind-boggling imagery for movies like Predator and The Abyss, as well as indie freakfests like Jack Frost and this flick, called Faust: Love of the Damned. We've hidden this NSFW special effects WTF below the fold … and when I say this is NSFW, I should add that it's probably not safe for your mental health either. More »

They're not appropriately dressed, but these ladies are managing to get by in the apocalypse…
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They're not appropriately dressed, but these ladies are managing to get by in the apocalypse all the same. Illustrator Andrew Tarusov created a doomsday calendar, with a different gal and a different apocalypse for every month of the year. More »

Check out the NSFW trailer for Tokyo Species, a Japanese version of the US franchise about…
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Check out the NSFW trailer for Tokyo Species, a Japanese version of the US franchise about (let's face it) alien mating practices. If you recall, the US version features a sexy, tenticular Natasha Henstridge fucking and murdering her way through a string of men as she searches for the perfect sperm. More »

The avid pornography viewer knows that the adult film industry is expanding crystallinely into a…
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The avid pornography viewer knows that the adult film industry is expanding crystallinely into a latticework of niche kinks, like a sordid snowflake made of ménage à troises with lost cable repairmen. If you want to film a XXX adaptation of the musical 1776, A.) nobody will blink; and B.) chances are some dude in Choconut, Pennsylvania has done it first - on stilts. More »

One of the great thrills of appreciating retro pop culture is delving into the campiness and cheesiness of bygone eras. Over the years, io9's "found footage" series has featured hundreds and hundreds of weird clips from movies and TV shows, plus other cultural detritus. Like the above clip, which comes from The Humanoid. Here are some of the absolute campiest and most ridiculous moments from old movies that we've dug up. More »

Body painting and Predator may not be an obvious combination, but Arnold caked himself in mud that…
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Body painting and Predator may not be an obvious combination, but Arnold caked himself in mud that one time, remember? Erotic photographer Simon has depicted a Yautja huntress posing with nothing more than a shoulder cannon and a coy smile. More »

Like any reasonable human being, you've thought to yourself, "Man, I wish there was a…
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Like any reasonable human being, you've thought to yourself, "Man, I wish there was a building where I could wander around in total darkness and decrepitude, surrounded by giant stone genitalia at every turn." Well rejoice, because there's a place in Japan where your fantasy is a reality. Welcome to the Mansion of Hidden Treasure. It's like Silent Hill, with more dildos. More »